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/* GStreamer
* (c) 2005 Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* (c) 2006 Jan Schmidt <thaytan@noraisin.net>
* (c) 2013 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include "clutter-gst-aspectratio.h"
#include "clutter-gst-auto-video-sink.h"
#include "clutter-gst-util.h"
GST_DEBUG_CATEGORY (clutter_gst_auto_video_sink_debug);
#define GST_CAT_DEFAULT clutter_gst_auto_video_sink_debug
#define DEFAULT_TS_OFFSET 0
/* Properties */
enum
{
PROP_0,
PROP_TS_OFFSET,
PROP_CONTENT,
};
static GstStateChangeReturn
clutter_gst_auto_video_sink_change_state (GstElement *element,
GstStateChange transition);
static void clutter_gst_auto_video_sink_dispose (ClutterGstAutoVideoSink3 *sink);
static void clutter_gst_auto_video_sink_clear_kid (ClutterGstAutoVideoSink3 *sink);
static void clutter_gst_auto_video_sink_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec);
static void clutter_gst_auto_video_sink_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec);
#define clutter_gst_auto_video_sink_parent_class parent_class
G_DEFINE_TYPE (ClutterGstAutoVideoSink3,
clutter_gst_auto_video_sink,
GST_TYPE_BIN)
static ClutterInitError _clutter_initialized = CLUTTER_INIT_ERROR_UNKNOWN;
static void
_clutter_init (void)
{
/* We must ensure that clutter is initialized */
_clutter_initialized = clutter_init (NULL, NULL);
if (_clutter_initialized != CLUTTER_INIT_SUCCESS)
g_critical ("Unable to initialize Clutter");
}
static void
clutter_gst_auto_video_sink_class_init (ClutterGstAutoVideoSink3Class *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *eklass = GST_ELEMENT_CLASS (klass);
_clutter_init ();
GST_DEBUG_CATEGORY_INIT (clutter_gst_auto_video_sink_debug,
"clutterautovideosink",
0,
"clutter auto video sink");
gobject_class->dispose = (GObjectFinalizeFunc) clutter_gst_auto_video_sink_dispose;
gobject_class->set_property = clutter_gst_auto_video_sink_set_property;
gobject_class->get_property = clutter_gst_auto_video_sink_get_property;
eklass->change_state = GST_DEBUG_FUNCPTR (clutter_gst_auto_video_sink_change_state);
g_object_class_install_property (gobject_class,
PROP_TS_OFFSET,
g_param_spec_int64 ("ts-offset",
"TS Offset",
"Timestamp offset in nanoseconds",
G_MININT64,
G_MAXINT64,
DEFAULT_TS_OFFSET,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class,
PROP_CONTENT,
g_param_spec_object ("content",
"Clutter Content",
"Clutter Content",
CLUTTER_GST_TYPE_CONTENT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
if (_clutter_initialized == CLUTTER_INIT_SUCCESS) {
GstElement *clutter_sink = clutter_gst_create_video_sink ();
gst_element_class_add_pad_template (eklass,
gst_element_class_get_pad_template (GST_ELEMENT_GET_CLASS (clutter_sink),
"sink"));
gst_element_class_set_static_metadata (eklass,
"Clutter Auto Video Sink",
"Sink/Video",
"Video sink using the Clutter scene graph as output",
"Lionel Landwerlin <lionel.g.landwerlin@linux.intel.com>");
g_object_unref (clutter_sink);
}
}
static void
clutter_gst_auto_video_sink_dispose (ClutterGstAutoVideoSink3 *sink)
{
clutter_gst_auto_video_sink_clear_kid (sink);
G_OBJECT_CLASS (parent_class)->dispose ((GObject *) sink);
}
static void
clutter_gst_auto_video_sink_clear_kid (ClutterGstAutoVideoSink3 *sink)
{
if (sink->kid)
{
gst_element_set_state (sink->kid, GST_STATE_NULL);
gst_bin_remove (GST_BIN (sink), sink->kid);
sink->kid = NULL;
/* Don't lose the SINK flag */
GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_FLAG_SINK);
}
if (sink->content)
{
clutter_gst_content_set_sink (CLUTTER_GST_CONTENT (sink->content), NULL);
g_clear_object (&sink->content);
}
}
/*
* Hack to make initial linking work; ideally, this'd work even when
* no target has been assigned to the ghostpad yet.
*/
static void
clutter_gst_auto_video_sink_reset (ClutterGstAutoVideoSink3 *sink)
{
GstPad *targetpad;
if (_clutter_initialized != CLUTTER_INIT_SUCCESS)
return;
/* Remove any existing element */
clutter_gst_auto_video_sink_clear_kid (sink);
/* video sink */
sink->kid = clutter_gst_create_video_sink ();
gst_bin_add (GST_BIN (sink), sink->kid);
/* pad, setting this target should always work */
targetpad = gst_element_get_static_pad (sink->kid, "sink");
if (!gst_ghost_pad_set_target (GST_GHOST_PAD (sink->pad), targetpad))
g_warning ("Couldn't link ghostpad's to target pad");
gst_object_unref (targetpad);
}
static void
clutter_gst_auto_video_sink_init (ClutterGstAutoVideoSink3 *sink)
{
sink->ts_offset = DEFAULT_TS_OFFSET;
sink->pad = gst_ghost_pad_new_no_target ("sink", GST_PAD_SINK);
gst_element_add_pad (GST_ELEMENT (sink), sink->pad);
clutter_gst_auto_video_sink_reset (sink);
/* mark as sink */
GST_OBJECT_FLAG_SET (sink, GST_ELEMENT_FLAG_SINK);
}
static void
clutter_gst_auto_video_sink_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
ClutterGstAutoVideoSink3 *sink = CLUTTER_GST_AUTO_VIDEO_SINK (object);
switch (prop_id)
{
case PROP_TS_OFFSET:
sink->ts_offset = g_value_get_int64 (value);
if (sink->kid)
g_object_set_property (G_OBJECT (sink->kid), pspec->name, value);
break;
case PROP_CONTENT:
g_clear_object (&sink->content);
sink->content = g_value_dup_object (value);
if (sink->content && sink->kid)
clutter_gst_content_set_sink (CLUTTER_GST_CONTENT (sink->content),
CLUTTER_GST_VIDEO_SINK (sink->kid));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
clutter_gst_auto_video_sink_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
ClutterGstAutoVideoSink3 *sink = CLUTTER_GST_AUTO_VIDEO_SINK (object);
switch (prop_id)
{
case PROP_TS_OFFSET:
g_value_set_int64 (value, sink->ts_offset);
break;
case PROP_CONTENT:
g_value_set_object (value, sink->content);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstStateChangeReturn
clutter_gst_auto_video_sink_change_state (GstElement *element,
GstStateChange transition)
{
GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;
ClutterGstAutoVideoSink3 *sink = CLUTTER_GST_AUTO_VIDEO_SINK (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (_clutter_initialized != CLUTTER_INIT_SUCCESS)
return GST_STATE_CHANGE_FAILURE;
if (!sink->content)
{
ClutterColor color = { 0, 0, 0, 0xff };
ClutterActor *stage = g_object_new (CLUTTER_TYPE_STAGE,
"background-color", &color,
NULL);
ClutterActor *actor = clutter_actor_new ();
sink->content = clutter_gst_aspectratio_new ();
clutter_stage_set_user_resizable (CLUTTER_STAGE (stage), TRUE);
clutter_actor_set_layout_manager (stage,
clutter_bin_layout_new (CLUTTER_BIN_ALIGNMENT_FILL,
CLUTTER_BIN_ALIGNMENT_FILL));
clutter_actor_add_child (stage, actor);
clutter_actor_set_content (actor, sink->content);
clutter_actor_show (stage);
}
clutter_gst_content_set_sink (CLUTTER_GST_CONTENT (sink->content),
CLUTTER_GST_VIDEO_SINK (sink->kid));
break;
default:
break;
}
ret = GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
return ret;
}
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